index的大括号不显示，并且中文也不显示...是因为没加入encoding="utf-8"吗？但加上就会报错
代码是这么写的 

fieldnames = ("id","text")
reader = csv.DictReader( csvfile, fieldnames)
for row in reader:
    json.dump("index",jsonfile)
    jsonfile.write('\n') 
    json.dump(row, jsonfile)
    jsonfile.write('\n')

要怎么改呢，求指导~~~